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SN74VMEH22501A-EP

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增强型米6体育平台手机版_好二三四，8 位通用总线收发器和 2 个 1 位总线收发器

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SN74VMEH22501A-EP

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米6体育平台手机版_好二三四详情

Supply voltage (min) (V) 3.15 Supply voltage (max) (V) 3.45 Number of channels 8 IOL (max) (mA) 12 IOH (max) (mA) -24 Input type Standard CMOS Output type 3-State Features Balanced outputs, Bias Vcc, Bus-hold, Damping resistors, Over-voltage tolerant inputs, Partial power down (Ioff), Power up 3-state, Very high speed (tpd 5-10ns) Technology family VME Rating HiRel Enhanced Product Operating temperature range (°C) -55 to 125
Supply voltage (min) (V) 3.15 Supply voltage (max) (V) 3.45 Number of channels 8 IOL (max) (mA) 12 IOH (max) (mA) -24 Input type Standard CMOS Output type 3-State Features Balanced outputs, Bias Vcc, Bus-hold, Damping resistors, Over-voltage tolerant inputs, Partial power down (Ioff), Power up 3-state, Very high speed (tpd 5-10ns) Technology family VME Rating HiRel Enhanced Product Operating temperature range (°C) -55 to 125
TSSOP (DGG) 48 101.25 mm² 12.5 x 8.1 TVSOP (DGV) 48 62.08 mm² 9.7 x 6.4
  • Controlled Baseline
    • One Assembly/Test Site, One Fabrication Site
  • Enhanced Diminishing Manufacturing Sources (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree(1)
  • Member of the Texas Instruments Widebus Family
  • UBT Transceiver Combines D-Type Latches and D-Type Flip-Flops for Operation in Transparent, Latched, or Clocked Modes
  • OEC Circuitry Improves Signal Integrity and Reduces Electromagnetic Interference (EMI)
  • Compliant With VME64, 2eVME, and 2eSST Protocols Validated at TA = -40°C to 85°C
  • Bus Transceiver Split LVTTL Port Provides a Feedback Path for Control and Diagnostics Monitoring
  • I/O Interfaces are 5-V Tolerant
  • B-Port Outputs (-48 mA/64 mA)
  • Y and A-Port Outputs (-12 mA/12 mA)
  • Ioff, Power-Up 3-State, and BIAS VCC Support Live Insertion
  • Bus Hold on 3A-Port Data Inputs
  • 26-Ω Equivalent Series Resistor on 3A Ports and Y Outputs
  • Flow-Through Architecture Facilitates Printed Circuit Board Layout
  • Distributed VCC and GND Pins Minimize High-Speed Switching Noise
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
  • Controlled Baseline
    • One Assembly/Test Site, One Fabrication Site
  • Enhanced Diminishing Manufacturing Sources (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree(1)
  • Member of the Texas Instruments Widebus Family
  • UBT Transceiver Combines D-Type Latches and D-Type Flip-Flops for Operation in Transparent, Latched, or Clocked Modes
  • OEC Circuitry Improves Signal Integrity and Reduces Electromagnetic Interference (EMI)
  • Compliant With VME64, 2eVME, and 2eSST Protocols Validated at TA = -40°C to 85°C
  • Bus Transceiver Split LVTTL Port Provides a Feedback Path for Control and Diagnostics Monitoring
  • I/O Interfaces are 5-V Tolerant
  • B-Port Outputs (-48 mA/64 mA)
  • Y and A-Port Outputs (-12 mA/12 mA)
  • Ioff, Power-Up 3-State, and BIAS VCC Support Live Insertion
  • Bus Hold on 3A-Port Data Inputs
  • 26-Ω Equivalent Series Resistor on 3A Ports and Y Outputs
  • Flow-Through Architecture Facilitates Printed Circuit Board Layout
  • Distributed VCC and GND Pins Minimize High-Speed Switching Noise
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

The SN74VMEH22501A-EP 8-bit universal bus transceiver has two integral 1-bit three-wire bus transceivers and is designed for 3.3-V VCC operation with 5-V tolerant inputs. The UBT transceiver allows transparent, latched, and flip-flop modes of data transfer, and the separate LVTTL input and outputs on the bus transceivers provide a feedback path for control and diagnostics monitoring. This device provides a high-speed interface between cards operating at LVTTL logic levels and VME64, VME64x, or VME320(2) backplane topologies.

The SN74VMEH22501A-EP device is pin-for-pin compatible to the SN74VMEH22501 device (SCES357), but operates at a wider operating temperature range.

High-speed backplane operation is a direct result of the improved OEC circuitry and high drive that has been designed and tested into the VME64x backplane model. The B-port I/Os are optimized for driving large capacitive loads and include pseudo-ETL input thresholds (½ VCC ±50 mV) for increased noise immunity. These specifications support the 2eVME protocols in VME64x (ANSI/VITA 1.1) and 2eSST protocols in VITA 1.5.

With proper design of a 21-slot VME system, a designer can achieve 320-MB transfer rates on linear backplanes and, possibly, 1-GB transfer rates on the VME320 backplane.

All inputs and outputs are 5-V tolerant and are compatible with TTL and 5-V CMOS inputs.

Active bus-hold circuitry holds unused or undriven 3A-port inputs at a valid logic state. Bus-hold circuitry is not provided on 1A or 2A inputs, any B-port input, or any control input. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

This device is fully specified for live-insertion applications using Ioff, power-up 3-state, and BIAS VCC. The Ioff circuitry prevents damaging current to backflow through the device when it is powered off/on. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. The BIAS VCC circuitry precharges and preconditions the B-port input/output connections, preventing disturbance of active data on the backplane during card insertion or removal, and permits true live-insertion capability.

When VCC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, output-enable (OE and OEBY) inputs should be tied to VCC through a pullup resistor and output-enable (OEAB) inputs should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the drive capability of the device connected to this input.

The SN74VMEH22501A-EP 8-bit universal bus transceiver has two integral 1-bit three-wire bus transceivers and is designed for 3.3-V VCC operation with 5-V tolerant inputs. The UBT transceiver allows transparent, latched, and flip-flop modes of data transfer, and the separate LVTTL input and outputs on the bus transceivers provide a feedback path for control and diagnostics monitoring. This device provides a high-speed interface between cards operating at LVTTL logic levels and VME64, VME64x, or VME320(2) backplane topologies.

The SN74VMEH22501A-EP device is pin-for-pin compatible to the SN74VMEH22501 device (SCES357), but operates at a wider operating temperature range.

High-speed backplane operation is a direct result of the improved OEC circuitry and high drive that has been designed and tested into the VME64x backplane model. The B-port I/Os are optimized for driving large capacitive loads and include pseudo-ETL input thresholds (½ VCC ±50 mV) for increased noise immunity. These specifications support the 2eVME protocols in VME64x (ANSI/VITA 1.1) and 2eSST protocols in VITA 1.5.

With proper design of a 21-slot VME system, a designer can achieve 320-MB transfer rates on linear backplanes and, possibly, 1-GB transfer rates on the VME320 backplane.

All inputs and outputs are 5-V tolerant and are compatible with TTL and 5-V CMOS inputs.

Active bus-hold circuitry holds unused or undriven 3A-port inputs at a valid logic state. Bus-hold circuitry is not provided on 1A or 2A inputs, any B-port input, or any control input. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

This device is fully specified for live-insertion applications using Ioff, power-up 3-state, and BIAS VCC. The Ioff circuitry prevents damaging current to backflow through the device when it is powered off/on. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. The BIAS VCC circuitry precharges and preconditions the B-port input/output connections, preventing disturbance of active data on the backplane during card insertion or removal, and permits true live-insertion capability.

When VCC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, output-enable (OE and OEBY) inputs should be tied to VCC through a pullup resistor and output-enable (OEAB) inputs should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the drive capability of the device connected to this input.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 SN74VMEH22501A-EP 8-Bit Universal Bus Transceiver and Two 1-Bit Bus Transceivers With Split LVTTL Port, Feedback Path, and 3-State Outputs 数据表 (Rev. A) PDF | HTML 2015年 11月 9日
* VID SN74VMEH22501A-EP VID V6205606 2016年 6月 21日
* 辐射与可靠性报告 CVMEH22501AIDGVREP Reliability Report 2012年 6月 4日
选择指南 Logic Guide (Rev. AB) 2017年 6月 12日
应用手册 Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 2015年 12月 2日
选择指南 逻辑器件指南 2014 (Rev. AA) 最新英语版本 (Rev.AB) 2014年 11月 17日
用户指南 LOGIC Pocket Data Book (Rev. B) 2007年 1月 16日
应用手册 Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 2004年 7月 8日
应用手册 SN74VMEH22501 Universal Bus Transceiver for the VMEbus Backplane 2003年 5月 14日
更多文献资料 SN74VMEH22501 Application Clip 2003年 3月 4日
应用手册 VMEH22501 in 2eSST and Conventional VME Backplane Applications 2002年 10月 7日
应用手册 Power-Up 3-State (PU3S) Circuits in TI Standard Logic Devices 2002年 5月 10日

设计和开发

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仿真模型

SN74VMEH22501A IBIS Model

SCEM522.ZIP (53 KB) - IBIS Model
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封装 引脚 CAD 符号、封装和 3D 模型
TSSOP (DGG) 48 Ultra Librarian
TVSOP (DGV) 48 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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